llvm/test/Transforms/InstCombine/wcslen-4.ll


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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Test that the wcslen library call simplifier works correctly.
;
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"

; Without the wchar_size metadata we should see no optimization happening.

@hello = constant [6 x i32] [i32 104, i32 101, i32 108, i32 108, i32 111, i32 0]

declare i64 @wcslen(ptr)

define i64 @test_no_simplify1() {
; CHECK-LABEL: @test_no_simplify1(
; CHECK-NEXT:    [[HELLO_L:%.*]] = call i64 @wcslen(ptr nonnull @hello)
; CHECK-NEXT:    ret i64 [[HELLO_L]]
;
  %hello_l = call i64 @wcslen(ptr @hello)
  ret i64 %hello_l
}